C1111233133313231133133313331333133311221123121111331333133313331311211121   >>    C111123313331323113313331333133313331122112312111133133313331333131121112   <<    C1111233133313231133133313331333133311221123121111331333133313331311211123   >>      C1111233133313231133133313331333133311221123121111331333133313331311211122   >>